Transom-operating mechanism



Aug. 28, 1923.

Q. A. SMITH ET AL TRANSOM OPERATING MECHANISM Filed Dec. 14, 1920 vwmtoz 's J7. S711 i 1;; ide: 1' axiom w 113 G Pa tented Aug.v 28, 1923;.

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oscen AUGUST SMITH, or: EAST CLEVELAND," AND (mosesenn L'EBER, on 1 CLEVELAND, 031:0. Y r

TRANSOM-OPERATIN G .MECHANISM.

Application filed December 14, 1920. Serial No. 430,798.

To all whom it may concern:

' Be it known that we, OSCAR A. SMITH and Gnoncn J. Leena, both citizens of the United ,States, said SMITH residing at East'Cleveland and said Lnnnn at Cleveland, both in the county of Cuyahoga and Stateof Ohio, have invented certain new and useful Improvements in Transom-Operating Mecha nism, of which the following is a specification. 7

This invention relates to transom oper ating mechanism, and has to do particularly with the provision of improved and novel means for raising and lowering transoms, such as roof sections of factory buildings, whereby efficient, effective and facile operation may be obtained in conjunction with simplicity of mechanism and economy of manufacture.

The main disadvantage and objection to transom operating devices heretofore constructed, and in commercial use, especially where such devices are utilized in connection with saw-tooth roof buildings wherein the transorns used are often from 20 to 60 feet long, and of great weight, arises from the fact that inasmuch as the power mechanism is placed at one end of the transom or roof section to be raised, and from which point by means of levers or rods connected by a shaft parallel with the transom the heavy transom or roof section is raised, there is always considerable torsion and weaving. This is due to the fact that the direct lifting power is not efiiciently distributed over the whole transom. that the weight directed at various points is not absorbed by the proper and effective leverage, and that the appara tus and mechanism lacks the proper fiexibility.

It is an object of'this invention to do away with these disadvantages and to provide a transom operating mechanism which will not only distribute the lifting power at various points but will also provide the neces sary leverage and flexibility in the apparatus.

Other objects of this invention will appear in the ensuing description thereof, reference being hLClytO the accompanying drawing forming a part of this specification,

wherein like reference characters indicate similar parts throughout-the several views and wherein Flg l ls a view illustrating an installation of my improved mechanism in a preferred embodiment thereof; Fig, 2 is an end view showing various operating parts; F 1g. 3 is a view partly broken away showing other operating parts of my improved mechanism. I r 7 My invention is particularly adapted for use in factory plants wherein the transoms or roof sections to be raised-and lowered are often of unusual length and weight, although it is to be understood thatmy improved mechanism may be employed in any desired manner. In the present case the roof section 2 having the framework 3 is provided with a transom 4 of any-suitable length as illus-' 'trated in Fig. 1. At a suitable distance from the top of the transom 4c is secured a bracket 6 and adjacent the top of the roof section 2 are also secured brackets 5 to which the transom is hinged. Housed in a suitable number of bearings 7 secured to the frame and running parallel with the transom is the main operating shaft 8. Supported on this shaft 8 and adjacent to the bearings 7 are a plurality ,offorked bracketsS), so'mounted. as to havea swinging movement relatively.

to the shaft. Against theinner side .of each bracket 9 is suitably mounted a mitre gear 10 an'd'in a bore at the base of each bracket and below and at right angles to the shaft 8 is houseda lifting screw 11. To the upper end of each screw is keyed a. mitre gear 12 is mesh with gear 10. Due to the swinging connection of the forkedbracket?) the operating or lifting screw 11 has a swinging movement about the axis of the shaft 8. In other words, the upper end of the screw is pivoted, while the lower end is'free to swing. Mounted on the lifting screw!) is a lifting nut 13 adapted to have a shiftable movement longitudinally thereof. Each nut 13 is provided with slotted wing portions atopposite sides thereof, to which, by means of pivot pins are pivoted a plurality of lifting members, comprising in 'the present case, a movable link 14. pivoted to the bracket 6 of the transom and a swinging link 15 having a stationary or relatively-fixed pivotal connection as at 16 to a portion of the i roof section.

Bolted to the frame of the building and having a suitable bore into which ishoused one end of the operating shaft 8 is a bracket 17 and substantially at rightjangles tothe shaft 8 and suitably: housed in a bearin-g -f in the li' is a shaft 18; hastened to the upper end of the shaft 18 and resting against a bearing of the bracket 17 is a mitre gear 19, and in mesh with this gear 1S -a1mitreggear 20 mounted on the -operat-:

ing; shaft 8. Suitable operating means for the shaft 18 is provided comprising in the present instance hand wheel 21 secured toastub shaft 22 rotatably mounted in the housing "T he lower end of the shaft 18 is suitably j ournaled in the housing 23 and is provided with a ge'ar'2eimeshing with a gear 25 at the inner end of the stub shaft 22. In case the operating wheel 21 is not installed directly below the bracket 17, the shaft 18 maybe made in a suitable number of sections connected together by means of universal joints 26, as illustrated in 1.

. In operation, it will be seen that by operating the hand-wheel 21, shaft-s 18 and 8 will be rotated, thus rotating the swinging lifting screws 11 whereupon the nuts 13 will .be shifted longitudinally thereof, withthem the inner ends of the lifting members 14: and 15.

In this operation, each member or'link 15 having a fixed pivotal connection 16 at its outer end, has a swinging' or sidewise movement which is imparted to each lifting screw 11,-thus causing the same to have a swinging movement in a planetary direction. During its operation,

furthermore, as each nut is shifted up wardly the lift-ingscrew, each lever or 'link 14 will he bodily shifted or moved up wardly, that is, have an endwise movement, thus lifting the transom 41-; Upon rotating the hand wheel 21 in the opposite direction, the reverse operation takes place and the transom 4 is lowered to its'closed position.

Although we have described a preferred embodiment of our invention, it is to be understood that we do not limit ourselves to the exact details of the construction de scribed only in so far as defined in the appended claims, and included within the screw for opening and closing the transom,

and means forrotating said shaft. 7

In a transombperating mechanism, the combination" of 'a transom, an operating shaft, a"liftin;:screw opera ively connectedto said shaftancl swinginglysuspended,

therefrom toggle mechanism connected to said screw for openingand closing the transom, and means for rotating said shaft.

i. In a transom operating mechanism the combination of a transom, an operating shaft, a liil ting screw operatively connected to said shaft and supported to have a swinging movement about the shaft as an axis, toggle mechanism' screw and having a part shiftable thereon for opening and closing the transom, and means for rotating the shaft. J V

5. in a transom operating mechanism, the combination of a transom, an operating shaft, arotary screw'operatively connected to said shaft, toggle mechanism connected to said screw for opening and closing the transom, and means for operating said shaft. i r 1 6. The combination of a plurality of tra'nsoms, an operating shaft'supported ad jacent thereto, a plurality of lifting' screws corresponding in number to the transoms,

and suspended from said shaft, mechanism connected to said screws forop'ening and closing the transoms and a common means fo1"o ,ierating said, shaft and all ofsai'd 7 screws simultaneously;

- '7. The combination of a plurality of transonis, an operating shaft supported adjacent thereto, 'a plurality of lifting screws correspondingg' in number to the transoms and spcnded from said shaft, toggle mechanism connected to said screws for opening: and closing the tr'ansoms, and a common means for operating said shaft and all of said screws simultaneously. 7

' In a transom operating mechanism, the combination of a transom. an operating shaft supported adjacent thereto, swingingly supported means pivoted atone end and oi erativelvconnected to said shaft, a

link pivotally connected to said means and to the transom; and means for operating said shaft thereby to operate said swinging means, said link being; shifted endwise thereby to swing the transom.

9. In a transom operating mechanism, the

combination of a transom, an operating shaft mounted ad acent thereto,sw1n c1ngly connected to said 7 supported means pivoted at one end and free at its opposite end and als'o operatively connected 'to said shaft, a'link pivotallv con nected to said means and to the transom.

and a link al'so pivotally connected to said means and to a fixed support, and means for operating said shaft thereby to operate said swinging means.

10. In a transom operating mechanism, a transom, a shaft mounted adjacentitheret'o, rotary lifting means operativelyconnected to said shaftftoggle 'means connected to 'saidlifting means/and comprising a pair 7 of links, one thereof connected to the transcan, and means for operating said shaft and transom.

11. The combination of a pivotedtransom simultaneously operative transom oper ating means. including an operating shaft and a plurality of swingably supported lifting screws operatively connected to the shaft, and means for operating the shaft.

12. The combination of a pivoted transom simultaneously operative transom operating means including shaft means, a Pinrality of swingablysupported rotary screws adapted to be operated from said shaft means, and also including means connected to each screw for moving the transom, and means for operating said transom operating means. 7

13. In a transom operating mechanism, the combination of a transom, an endwise shiftable link and a swinging link, one thereof connected to the transom and'the other to a fixed element, a rotary lifting screw cooperating with said links for moving the transom and an operating shaft connected to said screw, the latter being suspended from said shaft for sWingingmovement relatively thereto. 7

14. The combination of simultaneously operative transom operating means includ-l ing shaft means, a plurality of rotary screws adapted to be operated from said shaft means and also including toggle means connected to each screw for moving a transom, and. means for operating said transom operating means.

'15. In anapparatus of the class described, a transom, a relatively stationary shaft, a lifting screw connected thereto, a nut car 'ried by said screw, a'plu'rality of links piv oted to said-nut, and means for rotating said shaft and screw to shift said nut and elevate the transom. 5 I 16. In an apparatus of the class described, a transom, an operating shaft, a swingingly supported lifting screw operatively connected to the shaft, a nut carried by said screw, an endwise movable link pivoted to said nut and to the transom, and a swinging link pivoted to said-nut and to a fixed element, and means for rotating said screw thereby to shift said'nu't and shift the transom. v

17. The combination of a plurality of liftable transoms and mechanism for simul taneously operating all of said transoms,

links therebyv pushing one of the links to V and comprising a rotatable operating shaft,

each, comprising a pair of links connected with said lifting screw, one of said links.

having a fixed pivotal point and the other a movable pivotal point with the transom. Signed at Cleveland, Cuyahoga County, Ohio, this 29th day of November, 1920. I,

OSCAR AUGUST SMITH. GEORGE Jo -iN LEBER. 

